Replace StringRange w/ an actual StrRVal + more command implementations

src/vm/commands/words.ts

@@ -0,0 +1,33 @@
+import {Command, ParseContext, unwrapString, wrapDestructured} from "./command.js";
+import {LexInput} from "../lexer.js";
+import {StrVM} from "../vm.js";
+import {Awaitable} from "../../util/types.js";
+
+export class Words extends Command<{}> {
+    attemptParse(context: ParseContext): {} {
+        return {}
+    }
+
+    getDisplayName(): string {
+        return 'words'
+    }
+
+    isParseCandidate(token: LexInput): boolean {
+        return this.isKeyword(token, 'words')
+    }
+
+    execute(vm: StrVM): Awaitable<StrVM> {
+        return vm.tapInPlace(ctx =>
+            ctx.replaceSubject(sub => {
+                const val = unwrapString(sub)
+                const separators = [...val.matchAll(/\s+/sg)]
+                const parts = val.split(/\s+/sg)
+
+                return wrapDestructured(
+                    parts.map((part, idx) => ({
+                        prefix: idx ? separators[idx - 1][0] : undefined,
+                        value: part,
+                    })))
+            }))
+    }
+}